integrate

问题 I'm stuck with computing the integral at each point of an array. The idea is first to create a function ("Integrand"). Then, create a second function ("MyConvolve") that computes the necessary integral. Here's what I did up to now: Integrand = function(s,x) { 1/4*(abs(x-s)<=1)*(abs(s)<=1) } MyConvolve = function(func,data) { return( integrate(func, lower=-Inf, upper=Inf, data) ) } Now, running the code with some array, I get an error message: SomeMatrix = replicate(10, rnorm(10)) MyConvolve

问题 I would like to fit an hysteresis curve, with a superparamagnetic behavior, using a magnetic model which includes a Langevin function and a pair distribution function [1]. To fit with this equation I must solve a definite integral. I was trying to use scipy.integrate.quad for this purpose and the features of lmfit, but I do not get -at least- to simulate a reasonable curve (see the code below). Some real physical parameters that can be used to simulate this equation are: Dm = 3.2E-9 m, w = 0

问题 I have a distributed system that all of them use lig4j for log system events.I have a Cassandra cluster that I want to put all of my logs in log4j format in that. Is there any open source program that integrates logs in log4j format to my Cassandra cluster? 回答1: A good choice would be Apache Flume. https://cwiki.apache.org/FLUME/ Flume is distributed log collection engine. It has built in support for log4j: http://archive.cloudera.com/cdh/3/flume/UserGuide/#_logging_via_log4j_directly There

问题 this is the follow-up to my question about getting a div's content. the second function is the one im having a hard time with. im pretty sure i can call a function from another one, but im not sure about placing them into oneanother like i did here. its obviously a silly attempt to make the code work, since it gives me an error: Blackline Frostbyte : in stock. : $139.99 Fatal error: Cannot redeclare get_string_between() (previously declared in /home/rambazar/public_html/cron.php:69) in /home

问题 Need Help to integrate Admin Lte theme in la ravel 5.4 , i try to integrate it but it show black pages. 回答1: Download laravel project folder by using: composer create-project --prefer-dist laravel/laravel laravelLTE Create database named :laravel and make database related changes in .env file DB_CONNECTION=mysql DB_HOST=127.0.0.1 DB_PORT=3306 DB_DATABASE=laravel DB_USERNAME=root DB_PASSWORD=null Goto the folder path /var/www/html$ cd laravelLTE To run all of your outstanding migrations,

问题 I got a small question with a big background. Let me ask a short version and then expand it a little bit. Short version of my question is as follows. Imagine a situation - you have branch A with changelists 1000 to 1004. Then you make branch B from changelist 1004 and add a couple of more revisions (1005, 1006). After that you need to remove delta introduced by changelist 1002 from branch B. How can I do it? If I needed that on branch A - no problem, just Rollback to 1001 and re-integrate

问题 I run crossbar client with the runner of crossbar which run in the asyncio event loop. I want to call RPC by the trigger in tkinter. Is there any solution to combine them together? 回答1: You can make an HTTP request to call your RPC. Everything described here Crossbar HTTP Bridge Caller. Quick summary what you need to do: Make configuration: The HTTP Caller is configured on a path of a Web transport - here is part of a Crossbar configuration: { "workers": [ { "type": "router", ... "transports"

问题 I am writing a script for fitting peak shapes to spectroscopic data in Python, using Scipy, Numpy and Matplotlib. It can fit multiple peaks at once. The peak profile (for now) is Pseudo-Voigt, which is a linear combination of a Gaussian (aka Normal) and Lorentzian (aka Cauchy) distribution. I have an option switch with which I can either let the software optimize the contribution of Gaussian and Lorentzian or set it to a fixed value (where 0 = pure Gaussian and 1 = pure Lorentzian). Works as

问题 I am trying to use scipy.integrate.nquad with a ctypes function. I exactly followed the instruction on Faster integration using Ctypes. ctypes integration can be done in a few simple steps: Write an integrand function in C with the function signature double f(int n, double args[n]) , where args is an array containing the arguments of the function f . //testlib.c double f(int n, double args[n]) { return args[0] - args[1] * args[2]; //corresponds to x0 - x1 * x2 } Now compile this file to a

问题 I am currently trying to compute out an integral with scipy.integrate.quad, and for certain values I get the following error: /Library/Frameworks/Python.framework/Versions/7.3/lib/python2.7/site-packages/scipy/integrate/quadrature.py:616: AccuracyWarning: divmax (20) exceeded. Latest difference = 2.005732e-02 AccuracyWarning) Looking at the documentation, it isn't entirely clear to me why this warning is raised, what it means, and why it only occurs for certain values. 回答1: in scipy.integrate